@article{GDZPPN002302608,
title = {Semi-Ideals in Posets.},
journal = {Mathematische Annalen},
volume = {189},
year = {1970},
pages = {338-348},
zbl = {0182.33902},
url = {http://dml.mathdoc.fr/item/GDZPPN002302608}
}
VENKATANARASIMHAN, P.V. Semi-Ideals in Posets.. Mathematische Annalen, Tome 189 (1970) pp. 338-348. http://gdmltest.u-ga.fr/item/GDZPPN002302608/